海船船员考试
单选题A swing check valve is used in a pipeline to （）.A maintain a preset pressure on the lineB closely regulate the amount of flowC relieve excessive pressure on the lineD allow flow in one direction only
题目
maintain a preset pressure on the line
closely regulate the amount of flow
relieve excessive pressure on the line
allow flow in one direction only
相似问题和答案
第1题：
What type of valve is used to direct the flow of hydraulic fluid?
A.relief valve
B.direction control valve
C.stop valve
D.pressure control valve
第2题：
The helm command CHECK HER means ______．
A.test the steering control
B.read the compass heading
C.stop the swing using hard over rudder
D.slow the swing using moderate rudder
第3题：
Accidental flooding of the engine room bilges by the bilge main is prevented by( ).
A.stop-check valves installed in the bilge suction manifolds
B.using a positive displacement reciprocating bilge pump
C.installing educators in all bilge rose boxes
D.installing a swing check before each bilge valve
解析：bilge main:舱底水总管;stop-check valves：截止止回阀
译文：在舱底水吸入总管设立截止止回阀可以防止由舱底水总管引起的舱底水泛滥。
第4题：
control the back pressure of return oil
lock the oil lines under some conditions
change the direction of oil flow
act as relief valve
第5题：
Relief valves
Check valves
Safety valves
Reducing valve
第6题：
The valve on the discharge side of a cargo pump on a tank vessel will usually be a ______.
A.butterfly valve
B.spectacle valve
C.check valve
D.globe valve
第7题：
Overflow valve
Reducing valve
Balancing valve
Reducing valve or balancing valve
第8题：
The______is used to measure the volume of a liquid or gas through a pipeline within any given period of time
A.flow-meter
B.viscometer
C.micrometer
D.feeler
第9题：
a test valve
an inspection valve
a stop valve
a non-return valve
第10题：
Steady
Meet her
Midships
Stop engines